Control Techniques SP0403 Unidrive SP Compact Motion Drive Unit

Module Feature

SP0403 belongs to Unidrive SP series compact universal AC drive manufactured by Nidec Control Techniques. Rated 0.75kW, it supports V/F, open-loop vector, closed-loop vector and RFC servo control, compatible with asynchronous induction motors and Unimotor FM permanent magnet servo motors. Equipped with SM small option slot for encoder feedback, fieldbus communication and motion control modules. Compact panel mount design, widely used in small automation equipment, packaging machinery, material handling and precision processing equipment.

Working principle

Three-phase AC mains power is rectified to DC bus voltage. IGBT power module outputs adjustable voltage and frequency AC. The drive receives motion command from upper controller, compares with encoder feedback signal to realize closed-loop torque, speed and position regulation. Built-in brake transistor absorbs regenerative energy during motor deceleration.

Onboard components

Input rectifier bridge,IGBT power stage,main control PCB,LED status panel,dynamic braking transistor,heat sink,SM expansion option slot,power & control terminal blocks.

LED indicators

Power LED,run status LED,fault alarm LED.

Hardware self-diagnosis

Overvoltage,undervoltage,overcurrent,overtemperature,output short circuit,earth fault,encoder signal loss,motor overload,phase loss detection.

Programming software

Unidrive Tools software,supports motor auto-tune,real-time motion monitoring,fault log reading and parameter backup & restore.

Electrical & Process Parameters

Model:SP0403 Brand:Nidec Control Techniques Device type: Unidrive SP Compact Universal AC Drive Rated power:0.75kW Input voltage:380 ~ 480VAC three phase Continuous output current:2.1A Control mode:V/F,open vector,closed vector,RFC servo control Feedback:Incremental,SinCos,SSI,resolver via SM option card Cooling:Forced air cooling Protection:Over temperature,over current,over voltage,under voltage,short circuit,earth fault,encoder wiring fault detection

Mechanical & Structure

Mounting:Panel mounting inside control cabinet Protection class:IP20 Housing:Metal frame housing

Environmental

Operating temperature:0℃ ~ +40℃ Storage temperature:-40℃ ~ +85℃ Ambient humidity:20~80% non-condensing Certification: CE compliant Status: Nidec Control Techniques Unidrive SP compact universal drive for small industrial motion control

Installation

Follow ESD safety procedure before handling.Mount vertically with enough ventilation clearance.Connect three-phase mains power to L1/L2/L3 terminals and motor cable to U/V/W terminals.Use shielded cable for encoder and control I/O wiring to reduce EMI interference.Power on,complete motor auto-tune before commissioning.

Interface

Main power terminal,motor output terminal,digital/analog I/O terminal,encoder connector,SM expansion slot,keypad port.

Diagnostic

Over current:motor winding short circuit,cable damage or mechanical jam. Overheat:blocked heat sink or continuous overload. Encoder fault:loose wiring or encoder hardware failure. Under voltage:input mains fluctuation or phase missing.

Product Brief

Nidec Control Techniques SP0403 Unidrive SP compact universal AC drive,0.75kW,380-480V three phase input,supports vector and servo control,expandable with SM option modules for small-scale industrial automation applications.